<?php
/**
 * Smarty Internal Plugin Resource Stream
 *
 * Implements the streams as resource for Smarty template
 *
 * @package    Smarty
 * @subpackage TemplateResources
 * @author     Uwe Tews
 * @author     Rodney Rehm
 */

/**
 * Smarty Internal Plugin Resource Stream
 *
 * Implements the streams as resource for Smarty template
 *
 * @link       http://php.net/streams
 * @package    Smarty
 * @subpackage TemplateResources
 */
class Smarty_Internal_Resource_Stream extends Smarty_Resource_Recompiled {

	/**
	 * populate Source Object with meta data from Resource
	 *
	 * @param Smarty_Template_Source   $source    source object
	 * @param Smarty_Internal_Template $_template template object
	 *
	 * @return void
	 */
	public function populate(Smarty_Template_Source $source, Smarty_Internal_Template $_template = null) {
		if (strpos($source->resource, '://') !== false)
		{
			$source->filepath = $source->resource;
		}
		else
		{
			$source->filepath = str_replace(':', '://', $source->resource);
		}
		$source->uid = false;
		$source->content = $this->getContent($source);
		$source->timestamp = false;
		$source->exists = !!$source->content;
	}

	/**
	 * Load template's source from stream into current template object
	 *
	 * @param Smarty_Template_Source $source source object
	 *
	 * @return string template source
	 * @throws SmartyException if source cannot be loaded
	 */
	public function getContent(Smarty_Template_Source $source) {
		$t = '';
		// the availability of the stream has already been checked in Smarty_Resource::fetch()
		$fp = fopen($source->filepath, 'r+');
		if ($fp)
		{
			while (!feof($fp) && ($current_line = fgets($fp)) !== false)
			{
				$t .= $current_line;
			}
			fclose($fp);

			return $t;
		}
		else
		{
			return false;
		}
	}

	/**
	 * modify resource_name according to resource handlers specifications
	 *
	 * @param Smarty $smarty        Smarty instance
	 * @param string $resource_name resource_name to make unique
	 *
	 * @return string unique resource name
	 */
	protected function buildUniqueResourceName(Smarty $smarty, $resource_name) {
		return get_class($this) . '#' . $resource_name;
	}
}
